Submarine mine.



F. A. H. HARLE- SUBMARINE MINE.

APPLICATION FILED JUNE n. 1914.

1 ,298,937. Patented Apr. 1, 1919:

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F. A. H. HARLE/I.

SUBMARINE MINE.

APPLICATION FILED JUNE H. I914.

1 ,298, 937.. Patented Apr. 1, 1919.

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FREDERIC AUGUSTE HENRI HARLE, or. PARIS,.FRA1\TCE, .AssIGNoR T HARLE &00., 0F PARIS, FRANCE, A. CORPORATION or FRANCE.

SUBMARINE MINE.

Specification of Letters Patent.

Application filed June 11, 1914. Serial No. 844,500.

To all whom it may concern:

HENRI HARLi J, of 26 avenue de Suifren,

Paris, France, engineer, a citizen of theRepublic of France, haveinvented new and useful Improvements in Submarine Mines, whichimprovements are fully set forth in the following specification. I

This invention relates to a brake for such submarine mines as areprovided with an anchor and an apparatus for regulating the depth ofimmersion of the mine.

In such mines while launching it is desirable that the rope connectingthe anchor to the mine should be at a tension suflicient to keep it tautbut not great enough to hold the mine below the surface while the ropeis being unwound.

Nith this object it has already been proposed to provide the drum withautomatic regulating brakes so as to correct as far as possibleaccidental variations in the strength of the brake and to avoid forinstance oscillations in the level of the mine when thrown into thewater. Most of such brakes however require regulation or adjustment justbefore use.

Apparatus constructed in accordance with this invention has not thiseffect.

According to this invention the brake is applied by the movement of aweight due to centrifugal force.

The invention is illustrated in the accompanying drawings in whichFigure l is an end elevation of the brake mechanism and Fig. 2 is apartial section taken through the axis of the drum.

Fig. 3 is a view similar to Fig. 1 and showing a modification, and Fig.4: is an assembly view with the anchor casing in section. I

c is the drum upon which the mooring rope is wound, it is mounted upon ashaft 1) and provided with a cheek a. (Z (l are spindles (two forexample) carried by the cheek a about which weighted arms 6 turn. Theanchor A inclosing the foregoing parts is of any usual or desiredconstruction.

In Fig. 1 the weights are shown in full lines resting against the shaft5.

When the drum 0 rotates centrifugal force tends to separate the weights6 and cause them to take a position such as is shown in dotted lines.

Shoes 9 carried by the weighted arms rub against the internal face ofthe fixed brake drum h.

In place of connecting the shoes directly to the weights 6, a spring aand abutment 1 maybe interposed as indicated in the drawmg 111 which asprings thrusts outward a plunger carrying the shoe g. The abutment flimiting the extension of the spring forces the shoe 9 to separate fromthe drum h when the weight e approaches the shaft.

The centrifugal movement'of the weight may with a spring such as i beadvantageously limited by a stop 70 to prevent the weights coming intocontact with the drum 71,.

In the modification shown in Fig. 3 each shoe g is mounted not upon aplunger but on a lever Zpivoted at d and the spring z acts directly uponthe lever Z.

As the speed of unwinding increases the weights 6 separating more underthe effect of centrifugal force, will force the shoes 9 harder andharder against the drum k. If the unwinding slows from any accidentalcause centrifugal force becomes less and the braking also becomes less.The unwinding is thus regulated.

When springs such as i are present the braking increases until theweights encounter the stops lo and after this the braking force remainsconstant. If there are no abutments 7c the braking force will stillcontinue to increase but slightly by reason of the direct friction ofthe masses against the drum it.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is:

1. In a submarine mine, an anchor provided with a rope drum and a brakedrum, in combination with a brake shoe, and means actuated bycentrifugal action for increasing or diminishing the pressure of thebrake shoe on the brake rim according to the speed of the rope drum.

2. In a submarine mine, an anchor provided with a rope drum and a brakedrum, in combination with a pivoted weighted lever mounted on the ropedrum and provided with a brake shoe, adapted to bear against the brakerim.

In a submarine mine, an anchor provided with a rope drum and a brakedrum, in combination with a pivoted weighted Patented Apr. 1, 1919.-

I betweenthe brakefshoe and the 1eve1', ..en 7 25:

level mounted on th e'rope drum and provided W h ,si .r n ,-pr ss dp t he the rope drum.- I g V v 4, In a submarinemlne, an anchoi" providedwith a'rope drum and a brake drum,

'in "c'oinbinationwith a "pivoted weighted lever mounted on the rope dium alififl fplOf 'vided 'with a springs-pressed brake shoe, adapted tobear-against theflbra kedri m; and V a'stop to limit the movement of theweighted lever.

vided-with arope': drum. and a brake drum,

in Combination with aglorake shoefand a piva votedvlweightedleveiyadaptedto bear onthe brake; shoe with:v'ary ngipressure-accordingto the speedof,the ropedrumi 1 20.4.; 6. In a submarine mine; anenchonprovidj'ed with a; rope drumand abrakedrum,

in eombinatio'n with ai piv-oted wei'g-htedlever, a brake's'hoeandanspringinteieposed;

abntment limiting the extension ofjfthen,

Copies of, this petent n gj'peobtained forflfive: cents" each, by

spring, at stop for limiting the move- WeightedIeverI 1' Y 7.Injasub1narinemine, an anchor provide'dfjwithe rope-drum and a,brakddrum, in combination with a pivoted weighted m it i the .,w ght d 7lev the. brake $1, 9 i being pivoted--- the mine as the leverfabrake-shoe pivoted on the-j same x :h eighted/ a p interposed betweenthe brake-shoe and the-lever,

.a stop limiting the movementof the-weighted ,levengind an armextendingfrom and form: v ing part-of the weighted 1ever,' seidarn1 'be-'5;Inesubmarinevmine, an anchor proi'ng provided with a lip forming anabutment arranged inthe path of the brake shoe, ,to limitthemovement ofsaid shoe and the extension of the spring- In testimony whereof- Ihavensigned'this specification in the presence of two subscrib ingwitnesses.

Witnesses:

HANso C. CoxE, GAsToN DE MES-'IRAL.

' FRE'DERIO AUGUSTE'HENRI'HABLE. I

addressingtheffio nn issioner of l E htents,

